WATER MILL - Actress Julianne Moore was in Water Mill this weekend for a great cause.

Moore hosted an event to support the Children's Health Fund, which helps underprivileged children get access to medical care. She brought along her lookalike daughter, Liv, who models with her mom in this month's Vogue.

Moore is no stranger to Long Island: when she's not making movies, she's an East End mom. She has a home in Montauk, and says that she spends time there with her family year-round.

Fans can see Moore in the upcoming film "The Hunger Games: Mockingjay," which hits theaters in November. She also stars in "Maps to the Stars," which is due out next month and landed Moore the award for best actress at the Cannes Film Festival.